St Ephraem - (373 AD): "I call upon you, Mediatrix of the world; I invoke your prompt protection in my necessities."
(fourth sermon on Our Lady) dispensatrix of all gifts... Mediatrix of the whole world.
Sancti Ephraem Syri opera graece et latine,. ed. Assemani, Vol. 3 (Rome, 1746), p. 525 and pp. 528‑529.
St. Andrew of Crete (660-740 AD): "Mediatrix of the law and grace
she is the mediation between the sublimity of God and the abjection of the flesh.
St. Cyril of Alexandria: "Hail Mary Theotokos, venerable treasure of the whole world, light unextinguished, crown of virginity, sceptre of orthodoxy, indestructible temple, which contains the uncontainable... it is through you that the Holy Trinity is glorified and adored, through you, the precious cross is venerated and adored throughout the whole world, through you that heaven is in gladness, that angels and archangels rejoice that demons are put to flight, through you that the tempter, the devil is cast from heaven, through you that the fallen creature is raised up to heaven, through you that all creation, once imprisoned in idolatry, has reached knowledge of the truth, that the faithful obtain baptism and the oil of joy, churches have been founded in the whole world, that peoples are led to conversion." [7]
St. Germanus: Our Lady is truly a good Mediatrix of all sinners. (Hom. in Dorm. II, PG 98, 321, 352‑3)
St. Tarasius of Constantinople: the Mediatrix of all who are under Heaven. (In SS. Deiparae Praesentionem. PG 98, 1499). [8]
St. Bernard of Clairvaux: gratiae inventrix, mediatrix, salutis restauratrix saeculorum. [9]
"God Has willed that we should have nothing which would not pass through the hands of Mary." (Hom. III in vig. nativit., n. 10, PL 183, 100)
"God has placed in Mary the plenitude of every good, in order to have us understand that if there is any trace of hope in us, any trace of grace, any trace of salvation, it flows from her." [10]
"God could have dispensed His graces according to His good pleasure, without making use of this aqueduct (Mary); but it was His wish to provide this means whereby grace would reach you." [11]
St. Albert the Great: To her [Mary] alone was given this privilege, namely, a communication in the Passion; to her the Son willed to communicate the merit of the Passion, in order that He could give her the reward; and in order to make her a sharer in the benefit of Redemption. He willed that she be a sharer in the penalty of the Passion, insofar as she might become the Mother of all through re-creation even as she was the adjudtrix of the Redemption by her co-passion. And just as the whole world is bound to God by His supreme Passion, so also it is bound to the Lady of all by her co-passion. (Mariale, Opera Omnia, v. 37, Q. 150, p. 219)
"
every single grace passes through the hands of Mary. [12]
The Blessed Virgin is very properly called gate of heaven, for every created or uncreated grace that ever came or will ever come into this world came through her. (Mariale 147)
St. Thomas Aquinas: "Mary is the whole hope of our salvation, [13]
"Through the intercession of Mary any souls are in Paradise who would not be there had she not interceded for them, for God has entrusted her with the keys and treasures of the heavenly kingdom. [14]
St. Gregory Palamas: No divine gift can reach either angels or men, save through her mediation. As one cannot enjoy the light of a lamp
save through the medium of this lamp, so every movement towards God, every impulse towards good coming from Him is unrealizable save through the mediation of the Virgin. She does not cease to spread benefits on all creatures
. [15]
Theophanes of Nicaea: [Mary] is the dispenser and distributor of all the wondrous uncreated gifts of the divine Spirit, which make us Christs brothers and co-heirs, not only because she is granting the gifts of her natural Son to His brothers in grace, but also because she is bestowing them on these as her own true sons, though not by ties of nature but of grace. [16]
St. Louis De Montfort: "To Mary, His faithful spouse, God the Holy Ghost has communicated His unspeakable gifts; and He has chosen her to be the dispensatrix of all He possesses, in such sort that she distributes to whom she wills, as much as she wills, as she wills and when she wills, all His gifts and graces. The Holy Ghost gives no heavenly gift to men which does not pass through her virginal hands." [17]
Mary whom He has appointed to be
treasurer of His riches, Distributor of His graces, Worker of His great miracles, Restorer of the human race, Mediatrix of men, Destroyer of Gods enemies, and faithful Companion of His great works and triumphs. (W.G. 28)
St. Alphonsus Liguori: "God, who gave us Jesus Christ, wills that all graces that have been, that are, and will be dispensed to men to the end of the world through the merits of Jesus Christ, should be dispensed by the hands and through the intercession of Mary." (The Glories of Mary, Ch. 5).
"I consider it as indubitably true that all graces are dispensed by Mary. [18]
St. John Vianney: "All the saints have a great devotion to Our Lady: no grace comes from Heaven without passing through her hands. We cannot go into a house without speaking to the doorkeeper. Well, the Holy Virgin is the doorkeeper of Heaven.
St. Peter Julian Eymard: "Mankind was unworthy to receive the Word directly from God, so Mary was our Mediatrix in the Incarnation, and she continues to exercise that function. No one comes to the knowledge of Jesus Christ and embraces His holy law except through her; no one obtains the saving gift of faith except by her prayers. Her mission, to which she is ever faithful, is to give us Jesus. He must be received from her hands, and in vain do we seek Him elsewhere." [19]